Instalirajte Innotop za praćenje izvedbe MySQL poslužitelja
Innotop je izvrstan program naredbenog retka, sličan ‘top commandu’ za nadgledanje lokalnih i udaljenih MySQL poslužitelja koji rade pod InnoDB motorom. Innotop dolazi s mnogim značajkama i različitim vrstama načina/opcija, što pomaže u praćenju različitih aspekata MySQL izvedbe, a također pomaže administratoru baze podataka da otkrije što nije u redu s MySQL poslužiteljem.
Na primjer, Innotop pomaže u praćenju statusa replikacije mysql, korisničke statistike, popisa upita, InnoDB međuspremnika, InnoDB I/O informacija, otvorenih tablica, zaključanih tablica itd., Redovito osvježava svoje podatke, tako da možete vidjeti ažurirane rezultate.
Innotop dolazi s izvrsnim značajkama i fleksibilnošću i ne treba dodatnu konfiguraciju, a može se izvršiti jednostavnim pokretanjem naredbe 'innotop' s terminala.
Instaliranje Innotop-a (MySQL nadzor)
Innotop paket prema zadanim postavkama nije uključen u Linux distribucije kao što su RHEL, CentOS, Fedora i Scientific Linux. Morate ga instalirati omogućavanjem spremišta epel treće strane i upotrebom yum naredbe kao što je prikazano dolje.
# yum install innotop
Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: centos.mirror.net.in * epel: epel.mirror.net.in * epel-source: epel.mirror.net.in * extras: centos.mirror.net.in * updates: centos.mirror.net.in Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package innotop.noarch 0:1.9.0-3.el6 will be installed --> Finished Dependency Resolution Dependencies Resolved ========================================================================================================== Package Arch Version Repository Size ========================================================================================================== Installing: innotop noarch 1.9.0-3.el6 epel 149 k Transaction Summary ========================================================================================================== Install 1 Package(s) Total download size: 149 k Installed size: 489 k Is this ok [y/N]: y Downloading Packages: innotop-1.9.0-3.el6.noarch.rpm | 149 kB 00:00 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : innotop-1.9.0-3.el6.noarch 1/1 Verifying : innotop-1.9.0-3.el6.noarch 1/1 Installed: innotop.noarch 0:1.9.0-3.el6 Complete!
Da biste pokrenuli innotop, jednostavno upišite "innotop" i navedite opcije -u (korisničko ime) i -p (lozinka), iz naredbenog retka i pritisnite Enter.
# innotop -u root -p 'tecm1nt'
Nakon što se povežete s MySQL poslužiteljem, trebali biste vidjeti nešto slično sljedećem zaslonu.
[RO] Dashboard (? for help) localhost, 61d, 254.70 QPS, 5/2/200 con/run/cac thds, 5.1.61-log Uptime MaxSQL ReplLag Cxns Lock QPS QPS Run Run Tbls Repl SQL 61d 4 0 254.70 _ _ 462 Off 1
Pritisnite "?" da biste dobili sažetak opcija i upotrebe naredbenog retka.
Switch to a different mode: A Dashboard I InnoDB I/O Info Q Query List B InnoDB Buffers K InnoDB Lock Waits R InnoDB Row Ops C Command Summary L Locks S Variables & Status D InnoDB Deadlocks M Replication Status T InnoDB Txns F InnoDB FK Err O Open Tables U User Statistics Actions: d Change refresh interval p Pause innotop k Kill a query's connection q Quit innotop n Switch to the next connection x Kill a query Other: TAB Switch to the next server group / Quickly filter what you see ! Show license and warranty = Toggle aggregation # Select/create server groups @ Select/create server connections $ Edit configuration settings \ Clear quick-filters Press any key to continue
Ovaj odjeljak sadrži snimke zaslona nenamjenske upotrebe. Koristite velike tipke za prebacivanje između načina rada.
Ovaj način prikazuje statistiku korisnika i statistiku indeksa poredanu prema čitanju.
CXN When Load QPS Slow QCacheHit KCacheHit BpsIn BpsOut localhost Total 0.00 1.07k 697 0.00% 98.17% 476.83k 242.83k
Ovaj način prikazuje rezultate s SHOW FULL PROCESSLIST, slično načinu rada Mytop-ovog popisa upita. Ova značajka ne prikazuje informacije InnoDB i najkorisnija je za opću upotrebu.
When Load Cxns QPS Slow Se/In/Up/De% QCacheHit KCacheHit BpsIn BpsOut Now 0.05 1 0.20 0 0/200/450/100 0.00% 100.00% 882.54 803.24 Total 0.00 151 0.00 0 31/231470/813290/188205 0.00% 99.97% 1.40k 0.22 Cmd ID State User Host DB Time Query Connect 25 Has read all relay system u 05:26:04
Ovaj način prema zadanim postavkama prikazuje InnoDB-ove I/O statistike, I/O, I/O niti, I/O datoteke i tablice statistike dnevnika.
____________________ I/O Threads ____________________
Thread Purpose Thread Status
0 insert buffer thread waiting for i/o request
1 log thread waiting for i/o request
2 read thread waiting for i/o request
3 write thread waiting for i/o request
____________________________ Pending I/O _____________________________
Async Rds Async Wrt IBuf Async Rds Sync I/Os Log Flushes Log I/Os
0 0 0 0 0 0
________________________ File I/O Misc _________________________
OS Reads OS Writes OS fsyncs Reads/Sec Writes/Sec Bytes/Sec
26 3 3 0.00 0.00 0
_____________________ Log Statistics _____________________
Sequence No. Flushed To Last Checkpoint IO Done IO/Sec
0 5543709 0 5543709 0 5543709 8 0.00U ovom ćete odjeljku vidjeti informacije o spremištu međuspremnika InnoDB, statistikama stranica, umetaču umetanja i prilagodljivom indeksu raspršivanja. Podaci se dohvaćaju iz SHOW INNODB STATUSA.
__________________________ Buffer Pool __________________________
Size Free Bufs Pages Dirty Pages Hit Rate Memory Add'l Pool
512 492 20 0 -- 16.51M 841.38k
____________________ Page Statistics _____________________
Reads Writes Created Reads/Sec Writes/Sec Creates/Sec
20 0 0 0.00 0.00 0.00
______________________ Insert Buffers ______________________
Inserts Merged Recs Merges Size Free List Len Seg. Size
0 0 0 1 0 2
__________________ Adaptive Hash Index ___________________
Size Cells Used Node Heap Bufs Hash/Sec Non-Hash/Sec
33.87k 0 0.00 0.00Ovdje ćete prema zadanim postavkama vidjeti izlaz operacija reda InnoDB, raznih operacija redaka, semafora i tablica polja čekanja.
________________ InnoDB Row Operations _________________
Ins Upd Read Del Ins/Sec Upd/Sec Read/Sec Del/Sec
0 0 0 0 0.00 0.00 0.00 0.00
________________________ Row Operation Misc _________________________
Queries Queued Queries Inside Rd Views Main Thread State
0 0 1 waiting for server activity
_____________________________ InnoDB Semaphores _____________________________
Waits Spins Rounds RW Waits RW Spins Sh Waits Sh Spins Signals ResCnt
2 0 41 1 1 2 4 5 5
____________________________ InnoDB Wait Array _____________________________
Thread Time File Line Type Readers Lck Var Waiters Waiting? Ending?Način sažetka naredbi prikazuje svu tablicu cmd_summary, koja izgleda slično dolje.
_____________________ Command Summary _____________________ Name Value Pct Last Incr Pct Com_update 11980303 65.95% 2 33.33% Com_insert 3409849 18.77% 1 16.67% Com_delete 2772489 15.26% 0 0.00% Com_select 507 0.00% 0 0.00% Com_admin_commands 411 0.00% 1 16.67% Com_show_table_status 392 0.00% 0 0.00% Com_show_status 339 0.00% 2 33.33% Com_show_engine_status 164 0.00% 0 0.00% Com_set_option 162 0.00% 0 0.00% Com_show_tables 92 0.00% 0 0.00% Com_show_variables 84 0.00% 0 0.00% Com_show_slave_status 72 0.00% 0 0.00% Com_show_master_status 47 0.00% 0 0.00% Com_show_processlist 43 0.00% 0 0.00% Com_change_db 27 0.00% 0 0.00% Com_show_databases 26 0.00% 0 0.00% Com_show_charsets 24 0.00% 0 0.00% Com_show_collations 24 0.00% 0 0.00% Com_alter_table 12 0.00% 0 0.00% Com_show_fields 12 0.00% 0 0.00% Com_show_grants 10 0.00% 0 0.00%
Ovaj odjeljak izračunava statistiku, poput upita u sekundi, i prikazuje ih u brojnim različitim načinima.
QPS Commit_PS Rlbck_Cmt Write_Commit R_W_Ratio Opens_PS Tbl_Cch_Usd Threads_PS Thrd_Cch_Usd CXN_Used_Ever CXN_Used_Now 0 0 0 18163174 0 0 0 0 0 1.99 1.32 0 0 0 18163180 0 0 0 0 0 1.99 1.32 0 0 0 18163188 0 0 0 0 0 1.99 1.32 0 0 0 18163192 0 0 0 0 0 1.99 1.32 0 0 0 18163217 0 0 0 0 0 1.99 1.32 0 0 0 18163265 0 0 0 0 0 1.99 1.32 0 0 0 18163300 0 0 0 0 0 1.99 1.32 0 0 0 18163309 0 0 0 0 0 1.99 1.32 0 0 0 18163321 0 0 0 0 0 1.99 1.32 0 0 0 18163331 0 0 0 0 0 1.99 1.32
U ovom načinu rada vidjet ćete rezultate Slave SQL Status, Slave I/O Status i Master Status. Prva dva odjeljka prikazuju status slave i slave I/O niti niti, a posljednji odjeljak prikazuje glavni status.
_______________________ Slave SQL Status _______________________ Master On? TimeLag Catchup Temp Relay Pos Last Error 172.16.25.125 Yes 00:00 0.00 0 41295853 ____________________________________ Slave I/O Status _____________________________________ Master On? File Relay Size Pos State 172.16.25.125 Yes mysql-bin.000025 39.38M 41295708 Waiting for master to send event ____________ Master Status _____________ File Position Binlog Cache mysql-bin.000010 10887846 0.00%
"Innotop" možete pokrenuti ne interaktivno.
# innotop --count 5 -d 1 -n
uptime max_query_time time_behind_master connections locked_count qps spark_qps run spark_run open slave_running longest_sql 61d 2 0 0.000363908088893752 64 Yes 61d 2 0 4.96871146980749 _ _ 64 Yes 61d 2 0 3.9633543857494 ^_ __ 64 Yes 61d 2 0 3.96701862656428 ^__ ___ 64 Yes 61d 2 0 3.96574802684297 ^___ ____ 64 Yes
Da biste nadzirali udaljenu bazu podataka na udaljenom sustavu, upotrijebite sljedeću naredbu koristeći određeno korisničko ime, lozinku i ime hosta.
# innotop -u username -p password -h hostname
Za više informacija o upotrebi i opcijama 'innotop', pogledajte stranice s uputama pritiskom tipke "man innotop" na terminalu.
Referentni linkovi
Početna stranica Innotop
- Mtop (nadgledanje baze podataka MySQL) u RHEL/CentOS/Fedora